A new family of Drosophila balancer chromosomes with a w- dfd-GMR yellow fluorescent protein marker.

We report new w- fluorescent balancers scorable from stage 13 through adulthood that bear a nuclear-localized yellow fluorescent protein marker directly driven by dfd and GMR enhancer elements. The utility of this marker is enhanced by identification of an anti-GFP/yellow fluorescent protein (YFP) serum that is compatible with heat fixation.